/**************************************************************************
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*
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* Copyright (C) 2014 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/* gallium blitter implementation in GL */
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/* for when we can't use glBlitFramebuffer */
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#include <epoxy/gl.h>
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#include <stdio.h>
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#include "pipe/p_shader_tokens.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "pipe/p_screen.h"
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#include "pipe/p_state.h"
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#include "util/u_inlines.h"
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#include "util/u_memory.h"
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#include "util/u_dual_blend.h"
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#include "util/u_double_list.h"
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#include "util/u_format.h"
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#include "util/u_texture.h"
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#include "tgsi/tgsi_parse.h"
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#include "vrend_object.h"
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#include "vrend_shader.h"
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#include "vrend_renderer.h"
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#include "vrend_blitter.h"
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#define DEST_SWIZZLE_SNIPPET_SIZE 64
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struct vrend_blitter_ctx {
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virgl_gl_context gl_context;
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bool initialised;
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bool use_gles;
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int framebuffer_srgb_enabled;
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GLuint vaoid;
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GLuint vs;
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GLuint vs_pos_only;
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GLuint fs_texfetch_col[PIPE_MAX_TEXTURE_TYPES];
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GLuint fs_texfetch_depth[PIPE_MAX_TEXTURE_TYPES];
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GLuint fs_texfetch_depth_msaa[PIPE_MAX_TEXTURE_TYPES];
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GLuint fs_texfetch_col_swizzle;
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GLuint fb_id;
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unsigned dst_width;
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unsigned dst_height;
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GLuint vbo_id;
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GLfloat vertices[4][2][4]; /**< {pos, color} or {pos, texcoord} */
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};
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static struct vrend_blitter_ctx vrend_blit_ctx;
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struct vrend_blitter_point {
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int x;
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int y;
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};
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struct vrend_blitter_delta {
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int dx;
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int dy;
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};
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static bool build_and_check(GLuint id, const char *buf)
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{
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GLint param;
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glShaderSource(id, 1, (const char **)&buf, NULL);
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glCompileShader(id);
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glGetShaderiv(id, GL_COMPILE_STATUS, ¶m);
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if (param == GL_FALSE) {
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char infolog[65536];
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int len;
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glGetShaderInfoLog(id, 65536, &len, infolog);
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fprintf(stderr,"shader failed to compile\n%s\n", infolog);
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fprintf(stderr,"GLSL:\n%s\n", buf);
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return false;
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}
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return true;
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}
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static bool blit_build_vs_passthrough(struct vrend_blitter_ctx *blit_ctx)
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{
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blit_ctx->vs = glCreateShader(GL_VERTEX_SHADER);
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if (!build_and_check(blit_ctx->vs,
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blit_ctx->use_gles ? VS_PASSTHROUGH_GLES : VS_PASSTHROUGH_GL)) {
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glDeleteShader(blit_ctx->vs);
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blit_ctx->vs = 0;
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return false;
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}
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return true;
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}
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static void create_dest_swizzle_snippet(const uint8_t swizzle[4],
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char snippet[DEST_SWIZZLE_SNIPPET_SIZE])
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{
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static const uint8_t invalid_swizzle = 0xff;
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ssize_t si = 0;
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uint8_t inverse[4] = {invalid_swizzle, invalid_swizzle, invalid_swizzle,
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invalid_swizzle};
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for (int i = 0; i < 4; ++i) {
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if (swizzle[i] > 3) continue;
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if (inverse[swizzle[i]] == invalid_swizzle)
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inverse[swizzle[i]] = i;
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}
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for (int i = 0; i < 4; ++i) {
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int res = -1;
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if (inverse[i] > 3) {
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/* Use 0.0f for unused color values, 1.0f for an unused alpha value */
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res = snprintf(&snippet[si], DEST_SWIZZLE_SNIPPET_SIZE - si,
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i < 3 ? "0.0f, " : "1.0f");
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} else {
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res = snprintf(&snippet[si], DEST_SWIZZLE_SNIPPET_SIZE - si,
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"texel.%c%s", "rgba"[inverse[i]], i < 3 ? ", " : "");
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}
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si += res > 0 ? res : 0;
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}
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}
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static const char *vec4_type_for_tgsi_ret(enum tgsi_return_type tgsi_ret)
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{
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switch (tgsi_ret) {
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case TGSI_RETURN_TYPE_SINT: return "ivec4";
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case TGSI_RETURN_TYPE_UINT: return "uvec4";
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default: return "vec4";
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}
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}
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static enum tgsi_return_type tgsi_ret_for_format(enum virgl_formats format)
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{
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if (util_format_is_pure_uint(format))
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return TGSI_RETURN_TYPE_UINT;
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else if (util_format_is_pure_sint(format))
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return TGSI_RETURN_TYPE_SINT;
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return TGSI_RETURN_TYPE_UNORM;
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}
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static GLuint blit_build_frag_tex_col(struct vrend_blitter_ctx *blit_ctx,
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int tgsi_tex_target,
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enum tgsi_return_type tgsi_ret,
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const uint8_t swizzle[4])
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{
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GLuint fs_id;
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char shader_buf[4096];
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int is_shad;
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const char *twm;
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const char *ext_str = "";
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char dest_swizzle_snippet[DEST_SWIZZLE_SNIPPET_SIZE] = "texel";
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switch (tgsi_tex_target) {
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case TGSI_TEXTURE_1D:
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case TGSI_TEXTURE_BUFFER:
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twm = ".x";
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break;
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case TGSI_TEXTURE_1D_ARRAY:
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case TGSI_TEXTURE_2D:
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case TGSI_TEXTURE_RECT:
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case TGSI_TEXTURE_2D_MSAA:
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default:
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twm = ".xy";
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break;
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case TGSI_TEXTURE_SHADOW1D:
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case TGSI_TEXTURE_SHADOW2D:
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case TGSI_TEXTURE_SHADOW1D_ARRAY:
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case TGSI_TEXTURE_SHADOWRECT:
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case TGSI_TEXTURE_3D:
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case TGSI_TEXTURE_CUBE:
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case TGSI_TEXTURE_2D_ARRAY:
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case TGSI_TEXTURE_2D_ARRAY_MSAA:
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twm = ".xyz";
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break;
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case TGSI_TEXTURE_SHADOWCUBE:
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case TGSI_TEXTURE_SHADOW2D_ARRAY:
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case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
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case TGSI_TEXTURE_CUBE_ARRAY:
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twm = "";
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break;
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}
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if (tgsi_tex_target == TGSI_TEXTURE_CUBE_ARRAY ||
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tgsi_tex_target == TGSI_TEXTURE_SHADOWCUBE_ARRAY)
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ext_str = "#extension GL_ARB_texture_cube_map_array : require\n";
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if (swizzle)
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create_dest_swizzle_snippet(swizzle, dest_swizzle_snippet);
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snprintf(shader_buf, 4096, blit_ctx->use_gles ? FS_TEXFETCH_COL_GLES : FS_TEXFETCH_COL_GL,
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ext_str, vec4_type_for_tgsi_ret(tgsi_ret),
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vrend_shader_samplerreturnconv(tgsi_ret),
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vrend_shader_samplertypeconv(tgsi_tex_target, &is_shad), twm,
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dest_swizzle_snippet);
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fs_id = glCreateShader(GL_FRAGMENT_SHADER);
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if (!build_and_check(fs_id, shader_buf)) {
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glDeleteShader(fs_id);
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return 0;
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}
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return fs_id;
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}
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static GLuint blit_build_frag_tex_col_msaa(struct vrend_blitter_ctx *blit_ctx,
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int tgsi_tex_target,
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enum tgsi_return_type tgsi_ret,
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const uint8_t swizzle[4],
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int nr_samples)
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{
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GLuint fs_id;
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char shader_buf[4096];
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int is_shad;
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const char *twm;
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const char *ivec;
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char dest_swizzle_snippet[DEST_SWIZZLE_SNIPPET_SIZE] = "texel";
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const char *ext_str = blit_ctx->use_gles ? "" :
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"#extension GL_ARB_texture_multisample : enable\n";
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switch (tgsi_tex_target) {
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case TGSI_TEXTURE_2D_MSAA:
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twm = ".xy";
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ivec = "ivec2";
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break;
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case TGSI_TEXTURE_2D_ARRAY_MSAA:
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twm = ".xyz";
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ivec = "ivec3";
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break;
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default:
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return 0;
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}
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if (swizzle)
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create_dest_swizzle_snippet(swizzle, dest_swizzle_snippet);
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snprintf(shader_buf, 4096,
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blit_ctx->use_gles ? FS_TEXFETCH_COL_MSAA_GLES : FS_TEXFETCH_COL_MSAA_GL,
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ext_str, vec4_type_for_tgsi_ret(tgsi_ret),
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vrend_shader_samplerreturnconv(tgsi_ret),
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vrend_shader_samplertypeconv(tgsi_tex_target, &is_shad),
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nr_samples, ivec, twm, dest_swizzle_snippet);
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fs_id = glCreateShader(GL_FRAGMENT_SHADER);
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if (!build_and_check(fs_id, shader_buf)) {
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glDeleteShader(fs_id);
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return 0;
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}
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return fs_id;
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}
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static GLuint blit_build_frag_tex_writedepth(struct vrend_blitter_ctx *blit_ctx, int tgsi_tex_target)
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{
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GLuint fs_id;
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char shader_buf[4096];
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int is_shad;
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const char *twm;
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switch (tgsi_tex_target) {
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case TGSI_TEXTURE_1D:
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case TGSI_TEXTURE_BUFFER:
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twm = ".x";
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break;
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case TGSI_TEXTURE_1D_ARRAY:
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case TGSI_TEXTURE_2D:
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case TGSI_TEXTURE_RECT:
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case TGSI_TEXTURE_2D_MSAA:
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default:
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twm = ".xy";
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break;
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case TGSI_TEXTURE_SHADOW1D:
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case TGSI_TEXTURE_SHADOW2D:
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case TGSI_TEXTURE_SHADOW1D_ARRAY:
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case TGSI_TEXTURE_SHADOWRECT:
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case TGSI_TEXTURE_3D:
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case TGSI_TEXTURE_CUBE:
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case TGSI_TEXTURE_2D_ARRAY:
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case TGSI_TEXTURE_2D_ARRAY_MSAA:
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twm = ".xyz";
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break;
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case TGSI_TEXTURE_SHADOWCUBE:
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case TGSI_TEXTURE_SHADOW2D_ARRAY:
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case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
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case TGSI_TEXTURE_CUBE_ARRAY:
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twm = "";
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break;
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}
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snprintf(shader_buf, 4096, blit_ctx->use_gles ? FS_TEXFETCH_DS_GLES : FS_TEXFETCH_DS_GL,
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vrend_shader_samplertypeconv(tgsi_tex_target, &is_shad), twm);
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fs_id = glCreateShader(GL_FRAGMENT_SHADER);
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if (!build_and_check(fs_id, shader_buf)) {
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glDeleteShader(fs_id);
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return 0;
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}
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return fs_id;
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}
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static GLuint blit_build_frag_blit_msaa_depth(struct vrend_blitter_ctx *blit_ctx, int tgsi_tex_target)
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{
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GLuint fs_id;
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char shader_buf[4096];
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int is_shad;
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const char *twm;
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const char *ivec;
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switch (tgsi_tex_target) {
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case TGSI_TEXTURE_2D_MSAA:
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twm = ".xy";
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ivec = "ivec2";
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break;
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case TGSI_TEXTURE_2D_ARRAY_MSAA:
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twm = ".xyz";
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ivec = "ivec3";
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break;
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default:
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return 0;
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}
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snprintf(shader_buf, 4096, blit_ctx->use_gles ? FS_TEXFETCH_DS_MSAA_GLES : FS_TEXFETCH_DS_MSAA_GL,
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vrend_shader_samplertypeconv(tgsi_tex_target, &is_shad), ivec, twm);
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fs_id = glCreateShader(GL_FRAGMENT_SHADER);
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if (!build_and_check(fs_id, shader_buf)) {
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glDeleteShader(fs_id);
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return 0;
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}
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return fs_id;
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}
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static GLuint blit_get_frag_tex_writedepth(struct vrend_blitter_ctx *blit_ctx, int pipe_tex_target, unsigned nr_samples)
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{
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assert(pipe_tex_target < PIPE_MAX_TEXTURE_TYPES);
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if (nr_samples > 1) {
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GLuint *shader = &blit_ctx->fs_texfetch_depth_msaa[pipe_tex_target];
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if (!*shader) {
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unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex_target, nr_samples);
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*shader = blit_build_frag_blit_msaa_depth(blit_ctx, tgsi_tex);
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}
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return *shader;
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} else {
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GLuint *shader = &blit_ctx->fs_texfetch_depth[pipe_tex_target];
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if (!*shader) {
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unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex_target, 0);
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*shader = blit_build_frag_tex_writedepth(blit_ctx, tgsi_tex);
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}
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return *shader;
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}
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}
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static GLuint blit_get_frag_tex_col(struct vrend_blitter_ctx *blit_ctx,
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int pipe_tex_target,
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unsigned nr_samples,
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const struct vrend_format_table *src_entry,
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const struct vrend_format_table *dst_entry)
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{
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assert(pipe_tex_target < PIPE_MAX_TEXTURE_TYPES);
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bool needs_swizzle = dst_entry->flags & VIRGL_BIND_NEED_SWIZZLE;
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if (needs_swizzle || nr_samples > 1) {
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const uint8_t *swizzle = needs_swizzle ? dst_entry->swizzle : NULL;
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GLuint *shader = &blit_ctx->fs_texfetch_col_swizzle;
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if (shader) {
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glDeleteShader(*shader);
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}
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unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex_target, nr_samples);
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enum tgsi_return_type tgsi_ret = tgsi_ret_for_format(src_entry->format);
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if (nr_samples > 1) {
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// Integer textures are resolved using just one sample
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int msaa_samples = tgsi_ret == TGSI_RETURN_TYPE_UNORM ? nr_samples : 1;
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*shader = blit_build_frag_tex_col_msaa(blit_ctx, tgsi_tex, tgsi_ret,
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swizzle, msaa_samples);
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} else {
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*shader = blit_build_frag_tex_col(blit_ctx, tgsi_tex, tgsi_ret, swizzle);
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}
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return *shader;
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} else {
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GLuint *shader = &blit_ctx->fs_texfetch_col[pipe_tex_target];
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if (!*shader) {
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unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex_target, 0);
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enum tgsi_return_type tgsi_ret = tgsi_ret_for_format(src_entry->format);
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*shader = blit_build_frag_tex_col(blit_ctx, tgsi_tex, tgsi_ret, NULL);
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}
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return *shader;
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}
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}
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static void vrend_renderer_init_blit_ctx(struct vrend_blitter_ctx *blit_ctx)
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{
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struct virgl_gl_ctx_param ctx_params;
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int i;
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if (blit_ctx->initialised) {
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vrend_clicbs->make_current(0, blit_ctx->gl_context);
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return;
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}
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blit_ctx->initialised = true;
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blit_ctx->use_gles = epoxy_is_desktop_gl() == 0;
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ctx_params.shared = true;
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for (uint32_t i = 0; i < ARRAY_SIZE(gl_versions); i++) {
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ctx_params.major_ver = gl_versions[i].major;
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ctx_params.minor_ver = gl_versions[i].minor;
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blit_ctx->gl_context = vrend_clicbs->create_gl_context(0, &ctx_params);
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if (blit_ctx->gl_context)
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break;
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}
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vrend_clicbs->make_current(0, blit_ctx->gl_context);
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glGenVertexArrays(1, &blit_ctx->vaoid);
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glGenFramebuffers(1, &blit_ctx->fb_id);
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glGenBuffers(1, &blit_ctx->vbo_id);
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blit_build_vs_passthrough(blit_ctx);
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for (i = 0; i < 4; i++)
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blit_ctx->vertices[i][0][3] = 1; /*v.w*/
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glBindVertexArray(blit_ctx->vaoid);
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glBindBuffer(GL_ARRAY_BUFFER, blit_ctx->vbo_id);
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if (!blit_ctx->use_gles)
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glEnable(GL_FRAMEBUFFER_SRGB);
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blit_ctx->framebuffer_srgb_enabled = true;
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}
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static inline GLenum convert_mag_filter(unsigned int filter)
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{
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if (filter == PIPE_TEX_FILTER_NEAREST)
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return GL_NEAREST;
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return GL_LINEAR;
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}
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static void blitter_set_dst_dim(struct vrend_blitter_ctx *blit_ctx,
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unsigned width, unsigned height)
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{
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blit_ctx->dst_width = width;
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blit_ctx->dst_height = height;
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}
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static void blitter_set_rectangle(struct vrend_blitter_ctx *blit_ctx,
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int x1, int y1, int x2, int y2,
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float depth)
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{
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int i;
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/* set vertex positions */
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blit_ctx->vertices[0][0][0] = (float)x1 / blit_ctx->dst_width * 2.0f - 1.0f; /*v0.x*/
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blit_ctx->vertices[0][0][1] = (float)y1 / blit_ctx->dst_height * 2.0f - 1.0f; /*v0.y*/
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blit_ctx->vertices[1][0][0] = (float)x2 / blit_ctx->dst_width * 2.0f - 1.0f; /*v1.x*/
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blit_ctx->vertices[1][0][1] = (float)y1 / blit_ctx->dst_height * 2.0f - 1.0f; /*v1.y*/
|
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blit_ctx->vertices[2][0][0] = (float)x2 / blit_ctx->dst_width * 2.0f - 1.0f; /*v2.x*/
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blit_ctx->vertices[2][0][1] = (float)y2 / blit_ctx->dst_height * 2.0f - 1.0f; /*v2.y*/
|
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blit_ctx->vertices[3][0][0] = (float)x1 / blit_ctx->dst_width * 2.0f - 1.0f; /*v3.x*/
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blit_ctx->vertices[3][0][1] = (float)y2 / blit_ctx->dst_height * 2.0f - 1.0f; /*v3.y*/
|
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for (i = 0; i < 4; i++)
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blit_ctx->vertices[i][0][2] = depth; /*z*/
|
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glViewport(0, 0, blit_ctx->dst_width, blit_ctx->dst_height);
|
}
|
|
static void get_texcoords(struct vrend_resource *src_res,
|
int src_level,
|
int x1, int y1, int x2, int y2,
|
float out[4])
|
{
|
bool normalized = src_res->base.target != PIPE_TEXTURE_RECT &&
|
src_res->base.nr_samples <= 1;
|
|
if (normalized) {
|
out[0] = x1 / (float)u_minify(src_res->base.width0, src_level);
|
out[1] = y1 / (float)u_minify(src_res->base.height0, src_level);
|
out[2] = x2 / (float)u_minify(src_res->base.width0, src_level);
|
out[3] = y2 / (float)u_minify(src_res->base.height0, src_level);
|
} else {
|
out[0] = (float) x1;
|
out[1] = (float) y1;
|
out[2] = (float) x2;
|
out[3] = (float) y2;
|
}
|
}
|
static void set_texcoords_in_vertices(const float coord[4],
|
float *out, unsigned stride)
|
{
|
out[0] = coord[0]; /*t0.s*/
|
out[1] = coord[1]; /*t0.t*/
|
out += stride;
|
out[0] = coord[2]; /*t1.s*/
|
out[1] = coord[1]; /*t1.t*/
|
out += stride;
|
out[0] = coord[2]; /*t2.s*/
|
out[1] = coord[3]; /*t2.t*/
|
out += stride;
|
out[0] = coord[0]; /*t3.s*/
|
out[1] = coord[3]; /*t3.t*/
|
}
|
|
static void blitter_set_texcoords(struct vrend_blitter_ctx *blit_ctx,
|
struct vrend_resource *src_res,
|
int level,
|
float layer, unsigned sample,
|
int x1, int y1, int x2, int y2)
|
{
|
float coord[4];
|
float face_coord[4][2];
|
int i;
|
get_texcoords(src_res, level, x1, y1, x2, y2, coord);
|
|
if (src_res->base.target == PIPE_TEXTURE_CUBE ||
|
src_res->base.target == PIPE_TEXTURE_CUBE_ARRAY) {
|
set_texcoords_in_vertices(coord, &face_coord[0][0], 2);
|
util_map_texcoords2d_onto_cubemap((unsigned)layer % 6,
|
/* pointer, stride in floats */
|
&face_coord[0][0], 2,
|
&blit_ctx->vertices[0][1][0], 8,
|
FALSE);
|
} else {
|
set_texcoords_in_vertices(coord, &blit_ctx->vertices[0][1][0], 8);
|
}
|
|
switch (src_res->base.target) {
|
case PIPE_TEXTURE_3D:
|
{
|
float r = layer / (float)u_minify(src_res->base.depth0,
|
level);
|
for (i = 0; i < 4; i++)
|
blit_ctx->vertices[i][1][2] = r; /*r*/
|
}
|
break;
|
|
case PIPE_TEXTURE_1D_ARRAY:
|
for (i = 0; i < 4; i++)
|
blit_ctx->vertices[i][1][1] = (float) layer; /*t*/
|
break;
|
|
case PIPE_TEXTURE_2D_ARRAY:
|
for (i = 0; i < 4; i++) {
|
blit_ctx->vertices[i][1][2] = (float) layer; /*r*/
|
blit_ctx->vertices[i][1][3] = (float) sample; /*q*/
|
}
|
break;
|
case PIPE_TEXTURE_CUBE_ARRAY:
|
for (i = 0; i < 4; i++)
|
blit_ctx->vertices[i][1][3] = (float) ((unsigned)layer / 6); /*w*/
|
break;
|
case PIPE_TEXTURE_2D:
|
for (i = 0; i < 4; i++) {
|
blit_ctx->vertices[i][1][3] = (float) sample; /*r*/
|
}
|
break;
|
default:;
|
}
|
}
|
#if 0
|
static void set_dsa_keep_depth_stencil(void)
|
{
|
glDisable(GL_STENCIL_TEST);
|
glDisable(GL_DEPTH_TEST);
|
glDepthMask(GL_FALSE);
|
}
|
#endif
|
|
static void set_dsa_write_depth_keep_stencil(void)
|
{
|
glDisable(GL_STENCIL_TEST);
|
glEnable(GL_DEPTH_TEST);
|
glDepthFunc(GL_ALWAYS);
|
glDepthMask(GL_TRUE);
|
}
|
|
static inline GLenum to_gl_swizzle(int swizzle)
|
{
|
switch (swizzle) {
|
case PIPE_SWIZZLE_RED: return GL_RED;
|
case PIPE_SWIZZLE_GREEN: return GL_GREEN;
|
case PIPE_SWIZZLE_BLUE: return GL_BLUE;
|
case PIPE_SWIZZLE_ALPHA: return GL_ALPHA;
|
case PIPE_SWIZZLE_ZERO: return GL_ZERO;
|
case PIPE_SWIZZLE_ONE: return GL_ONE;
|
default:
|
assert(0);
|
return 0;
|
}
|
}
|
|
/* Calculate the delta required to keep 'v' within [0, max] */
|
static int calc_delta_for_bound(int v, int max)
|
{
|
int delta = 0;
|
|
if (v < 0)
|
delta = -v;
|
else if (v > max)
|
delta = - (v - max);
|
|
return delta;
|
}
|
|
/* Calculate the deltas for the source blit region points in order to bound
|
* them within the source resource extents */
|
static void calc_src_deltas_for_bounds(struct vrend_resource *src_res,
|
const struct pipe_blit_info *info,
|
struct vrend_blitter_delta *src0_delta,
|
struct vrend_blitter_delta *src1_delta)
|
{
|
int max_x = u_minify(src_res->base.width0, info->src.level) - 1;
|
int max_y = u_minify(src_res->base.height0, info->src.level) - 1;
|
|
/* Whether the bounds for the coordinates of a point are inclusive or
|
* exclusive depends on the direction of the blit read. Adjust the max
|
* bounds accordingly, with an adjustment of 0 for inclusive, and 1 for
|
* exclusive. */
|
int src0_x_excl = info->src.box.width < 0;
|
int src0_y_excl = info->src.box.height < 0;
|
|
src0_delta->dx = calc_delta_for_bound(info->src.box.x, max_x + src0_x_excl);
|
src0_delta->dy = calc_delta_for_bound(info->src.box.y, max_y + src0_y_excl);
|
|
src1_delta->dx = calc_delta_for_bound(info->src.box.x + info->src.box.width,
|
max_x + !src0_x_excl);
|
src1_delta->dy = calc_delta_for_bound(info->src.box.y + info->src.box.height,
|
max_y + !src0_y_excl);
|
}
|
|
/* Calculate dst delta values to adjust the dst points for any changes in the
|
* src points */
|
static void calc_dst_deltas_from_src(const struct pipe_blit_info *info,
|
const struct vrend_blitter_delta *src0_delta,
|
const struct vrend_blitter_delta *src1_delta,
|
struct vrend_blitter_delta *dst0_delta,
|
struct vrend_blitter_delta *dst1_delta)
|
{
|
float scale_x = (float)info->dst.box.width / (float)info->src.box.width;
|
float scale_y = (float)info->dst.box.height / (float)info->src.box.height;
|
|
dst0_delta->dx = src0_delta->dx * scale_x;
|
dst0_delta->dy = src0_delta->dy * scale_y;
|
|
dst1_delta->dx = src1_delta->dx * scale_x;
|
dst1_delta->dy = src1_delta->dy * scale_y;
|
}
|
|
/* implement blitting using OpenGL. */
|
void vrend_renderer_blit_gl(UNUSED struct vrend_context *ctx,
|
struct vrend_resource *src_res,
|
struct vrend_resource *dst_res,
|
const struct pipe_blit_info *info,
|
bool has_texture_srgb_decode)
|
{
|
struct vrend_blitter_ctx *blit_ctx = &vrend_blit_ctx;
|
GLuint buffers;
|
GLuint prog_id;
|
GLuint fs_id;
|
GLint lret;
|
GLenum filter;
|
GLuint pos_loc, tc_loc;
|
GLuint samp_loc;
|
bool has_depth, has_stencil;
|
bool blit_stencil, blit_depth;
|
int dst_z;
|
struct vrend_blitter_delta src0_delta, src1_delta, dst0_delta, dst1_delta;
|
struct vrend_blitter_point src0, src1, dst0, dst1;
|
const struct util_format_description *src_desc =
|
util_format_description(src_res->base.format);
|
const struct util_format_description *dst_desc =
|
util_format_description(dst_res->base.format);
|
const struct vrend_format_table *src_entry =
|
vrend_get_format_table_entry(info->src.format);
|
const struct vrend_format_table *dst_entry =
|
vrend_get_format_table_entry(info->dst.format);
|
|
has_depth = util_format_has_depth(src_desc) &&
|
util_format_has_depth(dst_desc);
|
has_stencil = util_format_has_stencil(src_desc) &&
|
util_format_has_stencil(dst_desc);
|
|
blit_depth = has_depth && (info->mask & PIPE_MASK_Z);
|
blit_stencil = has_stencil && (info->mask & PIPE_MASK_S) & 0;
|
|
filter = convert_mag_filter(info->filter);
|
vrend_renderer_init_blit_ctx(blit_ctx);
|
|
blitter_set_dst_dim(blit_ctx,
|
u_minify(dst_res->base.width0, info->dst.level),
|
u_minify(dst_res->base.height0, info->dst.level));
|
|
/* Calculate src and dst points taking deltas into account */
|
calc_src_deltas_for_bounds(src_res, info, &src0_delta, &src1_delta);
|
calc_dst_deltas_from_src(info, &src0_delta, &src1_delta, &dst0_delta, &dst1_delta);
|
|
src0.x = info->src.box.x + src0_delta.dx;
|
src0.y = info->src.box.y + src0_delta.dy;
|
src1.x = info->src.box.x + info->src.box.width + src1_delta.dx;
|
src1.y = info->src.box.y + info->src.box.height + src1_delta.dy;
|
|
dst0.x = info->dst.box.x + dst0_delta.dx;
|
dst0.y = info->dst.box.y + dst0_delta.dy;
|
dst1.x = info->dst.box.x + info->dst.box.width + dst1_delta.dx;
|
dst1.y = info->dst.box.y + info->dst.box.height + dst1_delta.dy;
|
|
blitter_set_rectangle(blit_ctx, dst0.x, dst0.y, dst1.x, dst1.y, 0);
|
|
prog_id = glCreateProgram();
|
glAttachShader(prog_id, blit_ctx->vs);
|
|
if (blit_depth || blit_stencil) {
|
fs_id = blit_get_frag_tex_writedepth(blit_ctx, src_res->base.target,
|
src_res->base.nr_samples);
|
} else {
|
fs_id = blit_get_frag_tex_col(blit_ctx, src_res->base.target,
|
src_res->base.nr_samples,
|
src_entry, dst_entry);
|
}
|
glAttachShader(prog_id, fs_id);
|
|
glLinkProgram(prog_id);
|
glGetProgramiv(prog_id, GL_LINK_STATUS, &lret);
|
if (lret == GL_FALSE) {
|
char infolog[65536];
|
int len;
|
glGetProgramInfoLog(prog_id, 65536, &len, infolog);
|
fprintf(stderr,"got error linking\n%s\n", infolog);
|
/* dump shaders */
|
glDeleteProgram(prog_id);
|
return;
|
}
|
|
glUseProgram(prog_id);
|
|
glBindFramebuffer(GL_FRAMEBUFFER_EXT, blit_ctx->fb_id);
|
vrend_fb_bind_texture(dst_res, 0, info->dst.level, info->dst.box.z);
|
|
buffers = GL_COLOR_ATTACHMENT0_EXT;
|
glDrawBuffers(1, &buffers);
|
|
glBindTexture(src_res->target, src_res->id);
|
|
if (src_entry->flags & VIRGL_BIND_NEED_SWIZZLE) {
|
glTexParameteri(src_res->target, GL_TEXTURE_SWIZZLE_R,
|
to_gl_swizzle(src_entry->swizzle[0]));
|
glTexParameteri(src_res->target, GL_TEXTURE_SWIZZLE_G,
|
to_gl_swizzle(src_entry->swizzle[1]));
|
glTexParameteri(src_res->target, GL_TEXTURE_SWIZZLE_B,
|
to_gl_swizzle(src_entry->swizzle[2]));
|
glTexParameteri(src_res->target, GL_TEXTURE_SWIZZLE_A,
|
to_gl_swizzle(src_entry->swizzle[3]));
|
}
|
|
/* Just make sure that no stale state disabled decoding */
|
if (has_texture_srgb_decode && util_format_is_srgb(src_res->base.format))
|
glTexParameteri(src_res->target, GL_TEXTURE_SRGB_DECODE_EXT, GL_DECODE_EXT);
|
|
glTexParameteri(src_res->target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
glTexParameteri(src_res->target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
glTexParameteri(src_res->target, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
|
|
glTexParameteri(src_res->target, GL_TEXTURE_BASE_LEVEL, info->src.level);
|
glTexParameteri(src_res->target, GL_TEXTURE_MAX_LEVEL, info->src.level);
|
glTexParameterf(src_res->target, GL_TEXTURE_MAG_FILTER, filter);
|
glTexParameterf(src_res->target, GL_TEXTURE_MIN_FILTER, filter);
|
pos_loc = glGetAttribLocation(prog_id, "arg0");
|
tc_loc = glGetAttribLocation(prog_id, "arg1");
|
samp_loc = glGetUniformLocation(prog_id, "samp");
|
|
glUniform1i(samp_loc, 0);
|
|
glVertexAttribPointer(pos_loc, 4, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void *)0);
|
glVertexAttribPointer(tc_loc, 4, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void *)(4 * sizeof(float)));
|
|
glEnableVertexAttribArray(pos_loc);
|
glEnableVertexAttribArray(tc_loc);
|
|
set_dsa_write_depth_keep_stencil();
|
|
for (dst_z = 0; dst_z < info->dst.box.depth; dst_z++) {
|
float dst2src_scale = info->src.box.depth / (float)info->dst.box.depth;
|
float dst_offset = ((info->src.box.depth - 1) -
|
(info->dst.box.depth - 1) * dst2src_scale) * 0.5;
|
float src_z = (dst_z + dst_offset) * dst2src_scale;
|
uint32_t layer = (dst_res->target == GL_TEXTURE_CUBE_MAP) ? info->dst.box.z : dst_z;
|
|
glBindFramebuffer(GL_FRAMEBUFFER_EXT, blit_ctx->fb_id);
|
vrend_fb_bind_texture(dst_res, 0, info->dst.level, layer);
|
|
buffers = GL_COLOR_ATTACHMENT0_EXT;
|
glDrawBuffers(1, &buffers);
|
blitter_set_texcoords(blit_ctx, src_res, info->src.level,
|
info->src.box.z + src_z, 0,
|
src0.x, src0.y, src1.x, src1.y);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(blit_ctx->vertices), blit_ctx->vertices, GL_STATIC_DRAW);
|
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
}
|
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_STENCIL_ATTACHMENT,
|
GL_TEXTURE_2D, 0, 0);
|
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0,
|
GL_TEXTURE_2D, 0, 0);
|
}
|
